ci: Improve Docker build workflow and update dependencies

- Add release type detection to distinguish between version tags and edge builds
- Implement separate Docker build steps for release and edge builds with appropriate tags
- Add edge and SHA-based image tags for main branch builds
- Update nginx configuration to support Vietnamese (vi) language routing
- Simplify nginx location block to handle static files and fallback to index.html
- Remove javascript-obfuscator and ts-migrate from dependencies
- Update README with simplified self-hosting instructions using npx http-server
- Consolidate multiple server setup examples into single recommended approach
- Update build preview command to use npm run preview instead of npx serve
- Improve localization files for German, English, Vietnamese, and Chinese
- Update worker files and TypeScript logic files for improved functionality
- Enhance PDF tool pages with better structure and internationalization support

package.json

@@ -35,7 +35,6 @@
     "@vitest/ui": "^3.2.4",
     "jsdom": "^27.0.1",
     "prettier": "^3.6.2",
-    "ts-migrate": "^0.1.35",
     "typescript": "~5.9.3",
     "vite": "^7.1.11",
     "vite-plugin-node-polyfills": "^0.24.0",
@@ -60,7 +59,6 @@
     "i18next": "^25.7.2",
     "i18next-browser-languagedetector": "^8.2.0",
     "i18next-http-backend": "^3.0.2",
-    "javascript-obfuscator": "^4.1.1",
     "jspdf": "^3.0.3",
     "jszip": "^3.10.1",
     "lucide": "^0.546.0",